I came home today to find one of my quails dead. I think it was one of my females that was in a cage with 5 other females and 2 males. There seems to be no damage to the body and the cage is very secure. These quail are about 10-12 weeks old. I thought about unearthing it (as it is buried) and plucking it to see if there is any damage. I did put some diatomaceous earth in the sand box to prevent bugs about 4 days ago. I haven't put it in their feed though. I read that if quails don't have cover in the wild they can die. Is this true in a cage? The pen is open on 3 sides and I really don't have any hiding places for them. Is there anything on the bodies I can look for to determine what got her?